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CVE-2026-77166

🗓️ 21 Sep 2026 16:17:24Reported by [email protected]Type 
nvd
 nvd🔗 web.nvd.nist.gov👁 7 Views

The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.

Related
Refs
ReporterTitlePublishedViews
Family
cve
CVE		CVE-2026-77166
21 Sep 202615:25
–cve
cvelist
Cvelist		CVE-2026-77166
21 Sep 202615:25
–cvelist
euvd
EUVD		EUVD-2026-83972
21 Sep 202615:25
–euvd
hackerone
Hacker One		Nextcloud: Improper input validation in emoji field leads to sidebar UI denial of service
12 Mar 202608:39
–hackerone
vulnrichment
Vulnrichment		CVE-2026-77166
21 Sep 202615:25
–vulnrichment

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21 Sep 2026 19:17Current
CVSS 32.4
CWE-840
7